Regal 3300 Owner's Manual page 168

CHAPTER 6
Battery Charger
Overview
A battery charger may be installed on your vessel. It features digital
microprocessor charging technology, 15 amp grounded receptacle and a
galvanic isolator. Other features include digital bank trouble indicators,
monthly storage reconditioning mode and digital LED display (LED's
for operation status and trouble-shooting). Use the battery charging
system at dockside by plugging in an approved extension cord. The
available current will be able to support on board components such
as cockpit refrigerator, stereo system, cockpit heater along with any
electronics including gaming devices.
Role Of Galvanic Isolator
The galvanic isolator is part of the battery charger option. Technically
speaking the galvanic isolator blocks DC current flow on the grounding
circuit. The system minimizes the possibility of electrocution.
6-8
https://www.boat-manuals.com/
GALVANIC
ISOLATOR (TYPICAL)
BATTERY
CHARGER (TYPICAL)